local light_zones = {}

local indoor_levels = {
	labx8				 	= true,
	jupiter_underground 	= true,

	-- Call of Chernobyl
	l03u_agr_underground 	= true,
	l04u_labx18 			= true,
	l08u_brainlab 			= true,
	l10u_bunker 			= true,
	l12u_sarcofag 			= true,
	l12u_control_monolith 	= true,
	l13u_warlab 			= true
}

---------------------------------------------------------------------------------------------------------------------
class "action_light"
function action_light:__init (obj, storage)
	self.object = obj
	self.st = storage
	self.active = false
	self.id = obj:id()
end
function action_light:reset_scheme()
	light_zones[self.id] = self
end
function action_light:update(delta)
	if xr_logic.try_switch_to_another_section(self.object, self.st, db.actor) then
		self.active = false
		light_zones[self.id] = nil
		return
	end
	self.active = true
end
function action_light:check_stalker(stalker)
    if self.active == false then
       return false, false
    end

	if self.object:inside(stalker:position()) then
		return self.st.light, true
	end

	return false, false
end

---------------------------------------------------------------------------------------------------------------------
function add_to_binder(npc, ini, scheme, section, storage)
--'	printf("DEBUG: add_to_binder: scheme='%s', section='%s'", scheme, section)
	local new_action = action_light (npc, storage)
	xr_logic.subscribe_action_for_events(npc, storage, new_action)
end

function set_scheme(npc, ini, scheme, section, gulag_name)
	local st = xr_logic.assign_storage_and_bind(npc, ini, scheme, section)
	st.logic = xr_logic.cfg_get_switch_conditions(ini, section, npc)
	st.light = ini:r_bool_ex(section,"light_on",false)
end



---------------------------------------------------------------------------------------------------------------------
function check_light(stalker)

	local st = db.storage[stalker:id()]
	local tg = time_global()

	if (st.srlight_timer and tg < st.srlight_timer) then
		return
	end
	st.srlight_timer = tg + 2000 + math.random(100)

    local torch = stalker:object("device_torch")
	
	-- Stalker dead or sleep animstate; release torch
	local anm = state_mgr.get_state(stalker)
	if (not stalker:alive() or anm == "zat_b106_wounded_idle" or anm == "sleep" or anm == "play_guitar" or string.find(anm,"animpoint") or string.find(anm,"sneak")) then
		if torch then
			if (torch:attachable_item_enabled()) then
				torch:enable_attachable_item(false)
			end
			
			local se_torch = alife_object(torch:id())
			if se_torch then
				alife_release(se_torch)
			end
		end
		return
	end
	
	-- Stalker in danger mode; release torch
	--[[
	if (st.danger_flag) then
		if torch then
			if (torch:attachable_item_enabled()) then
				torch:enable_attachable_item(false)
			end
			local se_torch = alife_object(torch:id())
			if se_torch then
				alife_release(se_torch)
			end
		end
		return
	end
	--]]
	
	-- Non-headlamp scheme in use; release torch
	local scheme = st.active_scheme
	if (scheme == "kamp" or scheme == "camper" or scheme == "sleeper") then
		if torch then
			if (torch:attachable_item_enabled()) then
				torch:enable_attachable_item(false)
			end
			local se_torch = alife_object(torch:id())
			if se_torch then
				alife_release(se_torch)
			end
		end
		return
	end
	
	-- Stalker has enemy and is not underground; release torch
	--[[
	if (stalker:best_enemy() and not indoor_levels[level.name()]) then
		if torch then
			if (torch:attachable_item_enabled()) then
				torch:enable_attachable_item(false)
			end
			local se_torch = alife_object(torch:id())
			if se_torch then
				alife_release(se_torch)
			end
		end
		return
	end
	--]]

	-- Daytime and place condition
	local forced, light = false, false

	for k,v in pairs(light_zones) do
		light, forced = v:check_stalker(stalker)
		if forced == true then
			break
		end
	end

	if not forced then
		local htime = level.get_time_hours()
		if htime <= 4 or htime >= 20 then
			light = true
		end

		if light == false then
			if indoor_levels[level.name()] == true then
				light = true
			end
		end
	end

	if (light) then
		if (torch) then
			if not (torch:attachable_item_enabled()) then
				torch:enable_attachable_item(true)
			end
		else
			alife_create_item("device_torch", stalker)
		end
	else
		if torch and alife_object(torch:id()) then
			if (torch:attachable_item_enabled()) then
				torch:enable_attachable_item(false)
			end
			alife_release_id(torch:id())
		end
	end
	
	if (stalker:has_info("npcx_is_companion")) then
		if (stalker:has_info("npcx_beh_substate_stealth")) then
			if torch then
				if (torch:attachable_item_enabled()) then
					torch:enable_attachable_item(false)
				end
				local se_torch = alife_object(torch:id())
				if se_torch then
					alife_release(se_torch)
				end
			end
		end
	end
end

function clean_up ()
	for k,v in pairs(light_zones) do
		light_zones[k] = nil
	end
end